Vega VEGAMET 841, Руководство по эксплуатации

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5 Connecting to power supply
VEGAMET 841 • 4 … 20 mA
58864-EN-200401
over the same two-wire cable. This mode is provided for connec-
tion of measuring transducers without separate power supply
(sensors in two-wire version).
•
In passive mode the sensors are not powered, only the measured
value is transmitted. This input is for connection of transmitters
with their own separate voltage supply (sensors in four-wire ver-
sion). The VEGAMET 841 can also be looped into the existing
circuit like a normal ammeter.
Note:
With a VEGAMET 841 in Ex version, the passive input is not available.
5.3 Connecting
The voltage supply and inputs and outputs are connected via the
spring-loaded terminals.
Information:
Solid cores as well as flexible cores with wire end sleeves are
inserted directly into the terminal openings. In case of flexible cores
without end sleeves, a small screwdriver must be pressed into the
rectangular opening so that the terminal opening is then free. When
the screwdriver is pulled out, the terminals are closed again.
You can find further information on the max. wire cross-section in the
technical data.
Connect the device as described in the following wiring plan.
5.4 Wiring plan
91 92
L N
+ - + -
61 62 63 64 65 66 67 68 69
41 42
1 2 3
Power 3 2 1 Sensor
Relay Output
Output
Current
1 2 3 4
5
Fig. 6: Wiring plan VEGAMET 841
1 Voltage supply of the controller
2 Relay outputs 1 … 3
3 Current output
4 Sensor input (active/passive)
5 Ground terminal for protective conductor
Connection technology
Connecting